package com.atguigu.lease.web.app.service.impl;


import com.aliyun.dysmsapi20170525.Client;
import com.aliyun.dysmsapi20170525.models.SendSmsRequest;
import com.atguigu.lease.common.exceptions.LeaseException;
import com.atguigu.lease.common.redis.RedisConstant;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.web.app.service.LoginService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;

import java.util.Random;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {

    @Autowired
    private Client client;

    @Autowired
    private RedisTemplate redisTemplate;

    @Override
    public void sendCode(String phone) throws Exception {
        String key = RedisConstant.APP_LOGIN_PREFIX +  phone;
        //1. 根据手机号去redis先获取是否存在
        Boolean hasKey = redisTemplate.hasKey(key); //判定有没有key
        if (hasKey) {
            //有，没有过期，不能发送
            throw  new LeaseException(ResultCodeEnum.APP_SEND_SMS_TOO_OFTEN);
        }
        //2. 不存在，生成一个6的随机数字
        Random random = new Random();
        int code =  100000 + random.nextInt(900000); //[0 - 899999]
        //4. 发送短信验证码即可
        SendSmsRequest smsRequest = new SendSmsRequest();
        smsRequest.setPhoneNumbers(phone);  //发送的手机号
        smsRequest.setSignName("阿里云短信测试"); //签名
        smsRequest.setTemplateCode("SMS_154950909"); //模板编号 阿里云的短信测试的模板编号
        smsRequest.setTemplateParam("{\"code\":\"" + code + "\"}\n"); //替代模板中的code
        client.sendSms(smsRequest);
        //3. 将数字和手机号存到redis
        redisTemplate.opsForValue().set(key,code,RedisConstant.APP_LOGIN_CODE_TTL_SEC, TimeUnit.SECONDS);
    }
}
